Lasting machine



Aug. 1, 1939. J. w. BARNA LASTING MACHINE Filed April 25, 1938 4Shets-Sheet 1 Aug. 1, 1939.

J. w. BARNA LASTING MACHINE Filed April 25, 1938 4 Sheets-Sheet 2 Aug.1, 1939. Y J. w. BARNA 2,167,733

LASTING MACHINE Filed April 25, 1938 4 Sheets-Sheet 3 1939. .n. w. BARNALASTING MACHINE Filed April 25, 1938 Aug. 1

4 Sheets-Sheet 4 Patented Aug. 1, 1939 AT ,i"

T OWE LASTING MACHINE Joseph W. Barna, Chicago, IlL, assignor offortynine per cent to Carl A. Laystrom, Chicago,

Ill.

Application April 25, 1938, Serial No. 204,074

19 Claims.

My invention relates to machines for lasting pro-welt uppers, and itsprimary objects are to provide improved wiper-assembly constructed andarranged to underlie the welt throughout its entire extent and draw orstretch the side, heel and toe portions of the upper upon the body ofthe last and lay its welted-edge upon the sole of the last, and improvedmeans for moving the wipers in both directions between their lastingposition and their spread position which enlarges the space between themfor conveniently positioning the work in the machine. Other objects ofthe invention will be apparent from the disclosure.

A practical embodiment of means for carrying out the invention is shownin the accompanying drawings, in which Fig. 1 is a top plan View of alasting machine constructed in accordance with my invention with itsparts in their relative positions when the wipers are spread to permit alast with an upper in preliminary position thereon to be positioned onthe wipers; Fig. 2 is a similar view showing the parts in theirpositions when the wipers are closed inwardly to lasting position; Fig.3 is a longitudinal vetical sectional view on the line 33 of Fig. 1;Fig. 4 is a transverse vertical sectional View on the line 4-4 in Fig.1; Fig. 5 is a detail view partly in section showing the supportingparts for the end-wipers; Fig. 6 is a detail view showing a modificationin the side-wiper units; and Fig. 7 is a detail View.

The wiper-assembly is organized to engage the upper all around the lastand is of the type disclosed in my co-pending application for patentfiled September 6, 1935, Serial Number 39,393, as it comprises sectionalend-wipers movable lengthwise and widthwise of a shoe in the machine,and side-wipers movable widthwise of the shoe with their ends overlyingthe end-wipers. However, the present wiper-assembly differs from that ofmy said application in that while the side-wipers in the latter arecarried and operated by the endwipers, the present side-wipers are notonly independently carried and operated, but also have associated meansto move the endwipers inwardly to their closed position to stretch theupper on the last and lay its welted-edge down upon the sole of thelast.

Referring to the drawings, a pair of toe-wipers I0 and II mounted on atoe-head l2 and a pair of heel-wipers l3 and i4 mounted on a heel-head[5 have movement lengthwise and widthwise of the medial line of themachine, these heads being movably carried in undercut grooves H6 in asupporting frame formed by an opposite pair of spaced longitudinal barsll, which are carried at their ends on upright cross-pieces it mountedon suitable bases i9 resting on and bolted to a workbench as shown inFig. 4, certain of these parts at the rear end of the machine beingshown 5 as broken away in Figs. 1, 2 and 3. Each end-wiper is carried onthe outer end of a swinging arm 2t which is pivoted at its inner end onthe round portion of a machine-bolt 2! whose threaded end is seated inthe associated 10 head. The overlapping portions of the arms for eachpair of end-wipers are reduced in thickness to bring the wipers intoapproximately the same horizontal plane, and their inner ends arerounded as at 22 to allow free swinging movement. 15 The end-wipers aremounted on their carrying arms by means permitting their heightwiseadjustment to bring them into alinement with the profiles of the solesof different lasts, and also permitting them to be tilted to conform tothe lon- 2Q gitudinal contours of different lasts. Each arm 25 carriesan upwardly extending base formed by an angle-bracket 23 secured to itby screws 24 and having an elongated slot 25 in its upwardly projectingportion. Each bracket 23 car- 25 ries an upwardly projecting wiper-post26 having an out-wardly and angularly directed horizontal seat 27 towhich the associated wiper is bolted as at 28. Each post 26 carries aset-screw 29 Whose shank passes through the slot 25 in the associated 3Qbracket 23, so that by loosening the screw the wiper-post can beadjusted heightwise and held in place by setting the screw down. Eachpost 26 can be tilted axially on its screw 29 at any heightwise positionto tilt the wiper; to lock 35 the post in different tilted positions itis provided at its lower end with an opposite pair of ears 3!) whichloosely straddle the bracket 23 and carry opposite adjusting screws 3iarranged in the line of the bracket. By adjusting the screws 3| the 40posts can be swung and held in different positions for different tiltsof the wipers.

The end-wipers are moved inwardly and outwardly by a right and leftthreaded screw-shaft 32 which is rotatably mounted in a central bear- 4sing 33 carried on the side-bars ii and has threaded engagement withbrackets 34 fixed to the opposite heads l2 and P5. The shaft carries atthe front end of the machine an operating handle 35; by turning thehandle clockwise the shaft is rotated to draw the heads l2 and I5inwardly toward each other to move the heel and toe wipers lengthwise ofa shoe in the machine, and by turning the handle counter-clockwise theshaft is rotated to move the heads out- 56 wardly away from each otherto move the heel and toe-wipers away from the shoe. The two heel-wipersand the two toe-wipers are normally stressed to their open or spreadpositions shown in Fig. 1, preferably by equalized spring-pressure. Eachhead l2 and I5 carries an outwardly projecting skeleton-frame composedof an inner cross-piece 36 fastened to the head, side-pieces 31 and anouter cross-piece 38 having a vertical upward flange 39 which isprovided with an elongated horizontal slot 40. An inwardly directedbearing-plate 4| is mounted on each flange 39 by a threaded stem 42which passes freely through the slot 4|] and is held in position byopposite set-nuts 43. A bell-crank lever consisting of a long arm 44 anda short arm 45 is pivoted as at 46 on each plate 4|; the lever at thetoe-end of the wiper-assembly is connected to the toe-wiper carriers 20,and the lever at the heelend of the assembly is connected to theheelwiper carriers 20; the long arm 44 of each lever is connected by apivoted link 41 to one of its associated carriers, and the short arm 45thereof is connected to the other associated carrier by a lever 48pivoted to the arm as at 49 and bolted to the carrier as at 50. Eachflange 39 carries a laterally projecting arm 5| to which one end of acoil-spring 52 is attached, the other ends of the springs being fixedrespectively to one of the carriers 20 of the heel and toe wipers as at53, the pull of the springs being suilicient to spread the wipers ofeach pair of end-wipers to their open positions. By manipulating theset-nuts 43 the bearing-plates 4| can be adjusted sidewise in theirslots 40 and then looked in position to turn the carriers 20 on theirpivots 2| to conform the end-wipers to the swing or pitch of theselected last, and the springs 52 and their equalizing connectionspreserve the wipers in their positions conforming to the last. Thelengthwise adjustment of the heads l2 and I5 by the shaft 32 sets thewiper-carriers 20 for different lengths of lasts. Each of the heel andtoe-wipers is provided on its outer edge near its free end with anoutwardly extending curved face or edge 54 which is engaged by aco-operating. member on the associated side-wiper unit to move the heeland toe-wipers on the same side of the machine inwardly widthwise of ashoe in the machine and put the corresponding spring 52 under tension,as fully hereinafter described.

The side-wipers 55 are of sufficient length to have their ends overliethe inner ends of their associated heel and toe-wipers in all positionsof the latter, and their lasting movement is widthwise only of a shoe inthe machine, each then moving towards and away from the shoe in a rightline. Each side-wiper 55 is supported independently of. the end-wipers,and is fixed by a headed screw 56 to an upright post 51 which isheightwise adjustable in a base 58 by a headed set-screw 59 whose innerend engages an elongated flat face 60 on the post to hold the latterfrom turning; by loosening the screw the post can be raised or loweredas may be necessary to adjust its wiper to different lasts and locked inthe desired position by setting the screw down to cause its head to bindthe post on its base. Each base 58 is carried in a head 6| having anundercut groove 62 extending in the lengthwise direction, of the machineand in. which the base is adjustably mounted for movement in the samedirection when it, is desired to adjust the sidewipers. lengthwise ofthe machine as for different lengths of the shank portions ofjshoes,they then being held in position by set-screws 63 to fit all sizes ofthe selected style of last. The heads 6| are moved towards and away fromeach other in a transverse guideway 64 mounted on the sidebarsintermediate the heel and toe heads by a right and left threadedscrew-shaft 65 which is rotatably mounted in a central bearing 66adjustably mounted on the guideway 64 as shown at 66 in Fig. 4 to setthe side-wipers to a selected style of last to correspond to the wipingedges of the heel and toe-wipers when set for that last. The shaft 65has threaded engagement with the opposite heads 6|, and has a handle 51;when the handle is turned clockwise the shaft 65 moves the headsinwardly towards each other to move the side-wipers widthwise of a shoein the machine, and when the handle is turned contra-clockwise the shaftmoves the heads outwardly away from each other. Each side-wiper unitcarries a suitable elongated member to engage the curved faces 54 of itsassociated heel and toe-wipers as the side-wiper moves inwardly. Thismember preferably is in the form of an elongated skirt 68 carried oneach side-wiper, but it may be of any construction and arrangementsuitable to carry out its function of moving the associated end-wipersinwardly against the force of their retracting springs 52. In Fig. 6 forexample it is in the form of a. lateral plate 68 attached to the post ofthe side-wiper.

In using the machine the end-wipers are set for a right or left last andto the swing of the selected last by shifting their control-plates 4|and locking them in position, and the side-wipers are setcorrespondingly by shifting the bearing 66 and locking it as shown at66. The endwipers are set for the length of the selected last by theirshaft 32, and they are set for the width of the last by the screws 24 inthe slots 23 in their bases 23 as shown for example in Fig. '7; theside-wipers are set for the width of the last by their shaft 65, and allthe wipers are adjusted heightwise to fit the last. As the end-wiperposts 26 are set at an angle to the longitudinal axis of the machine,when they are tilted on their screws 29 their wipers are tiltedlengthwise and sidewise so that the toe-wipers correspond to thelongitudinal curvature of the foot portion of. the sole of the last andthe heel-wipers correspond to the heel-seat of the last.

In operating the machine the wipers are spread to their open position asin Fig. I, and a last of selected style having an upper loosely arrangedthereon, preferably in the manner and by the means shown in my UnitedStates Patent No. 2,100,794 dated November 30, 1937, is mounted ininverted position in the machine with the welt supporting the Work onthe wipers in position for the lasting operation. The clamp, if, used,is withdrawn; the end-wipers are moved lengthwise by rotating the handle35 clockwise to have their wiping-edges near their outer ends engage theupper at its heel and toe and push its ends against the last; theside-wipers are moved inwardly widthwise of the shoe onto the edge ofthe last by rotating the handle 61 clockwise, their skirts 68 thenmoving the end-wipers inwardly widthwise of the shoe; the end-wipers maythen be moved farther lengthwise if desired, and the heel-wipers areclosed widthwise to bring all the wipers to their lasting position, asshown in Fig. 2, thus drawing or stretching the upper upon the body ofthe last and laying its welted-edge onto the sole of the last. Byrotating the handles 35 and 61 counterclockwise the wipers are spread totheir open position, when the lasted upper and. its last may be removedfrom the machine.

I claim:

1. In a lasting machine, heel-wipers and toewipers, independentlymounted side-wipers whose ends overlie the heel-wipers and toe wipers,and means associated with and controlled by the sidewipers andconstructed and arranged to impart lasting movement to the heel and toewipers when the side-wipers are moved to lasting position.

2. In a lasting machine, heel-wipers and toewipers, side-wipersindependently movable relative to said end-wipers and having their endsoverlying them, and co-operatingelements on the side-wipers and theirassociated end-wipers for transmitting the lasting movement of theside-wipers to the end wipers.

3- In a lasting machine, heel-wipers and toewipers having operativemovement lengthwise and widthwise of a shoe in the machine,independently mounted side-wipers whose ends overlie the aforesaidwipers, means to efiect lasting movement of the side-wipers, and meanscarried by the side-wipers and arranged to give lasting movement to theend-wipers as the side-wipers are advanced and to permit the end-wipersto open when the side-Wipers are retracted.

4. In a lasting machine, heel-lasting wipers and toe-lasting wipershaving operative movement lengthwise and widthwise of a shoe in themachine, and independently mounted side-wiper units each comprising awiper whose ends overlie the heel and toe wipers and means constructedand arranged to effect lasting movement of the heel and toe wipersduring the lasting movement of the side-wipers.

5. In a lasting machine, heel-wipers and toewipers, a common actuatorfor moving said sets Of wipers toward and away from each otherlengthwise of a shoe in the machine, side-wipers movable towards andaway from the sides of the shoe, and an abutment on each side-wiperconstructed to move its associated end-wipers into lasting position whenthe side-wipers are moved to lasting position and to release theend-wipers when the side-wipers are retracted.

6. In a lasting machine, heel-wipers and toewipers, a common actuatorfor moving said sets of wipers towards and away from each otherlengthwise of a shoe in the machine, side-wipers movable towards andaway from the sides of the shoe, and co-operating portions on eachsidewiper and its associated end-wipers arranged and constructed toadvance the end-wipers into lasting position when the side-wipers areadvanced to lasting position and to permit the end-wipers to beretracted after the side-wipers are retracted.

7. In a lasting machine, heel-wipers and toewipers having operativemovement lengthwise, and widthwise of a shoe in the machine, a commonactuator to move said sets of wipers towards and away from each otherlengthwise, side-wipers movable towards and away from each otherwidthwise of the shoe, a common actuator for the side-wipers, and askirt on each side-wiper constructed and arranged to move the end-wiperswidthwise when the side-wipers are advanced to lasting position.

8. In a lasting machine, a pair of heel-wipers and a pair of toe-wipershaving operative movement iengthwise and widthwise of a shoe in themachine, the wipers of each pair being normally spring-stressed to openwidthwise of the shoe, a common actuator for moving said pairs of wiperstowards and away from each other lengthwise of the shoe, side wipersmovable widthwise of the shoe and having their ends overlying theendwipers, a common actuator for moving the sidewipers towards and awayfrom the shoe, and means associated with each side-wiper and constructedto close the associated end-wipers widthwise of the shoe into lastingposition when the side-wipers are moved into lasting position.

9. In a lasting machine, a pair of heel-wipers and a pair of toe-wipershaving operative movement lengthwise and widthwise of a shoe in themachine, the wipers of each pair being normally spring-stressed to openwidthwise of the shoe, a common actuator for moving said pairs of wiperstowards and away from each other lengthwise of the shoe, side-wipersmovable widthwise of the shoe and having their ends overlying theendwipers, a common actuator for moving the sidewipers towards and awayfrom the shoe, and an abutment associated with each side-wiper andarranged to close the associated end-wipers into lasting position whenthe side-wipers are closed in their lasting position.

10. In a lasting machine, a pair of heel-wipers and a pair oftoe-wipers, a common actuator for moving said pairs of wipers lengthwiseof a shoe in the machine, means to vary the extent of said lengthwisemovement, a pair of side-wipers having their ends overlying saidend-wipers, a common actuator for moving said side-wipers towards andaway from each other widthwise of the shoe, and means to adjust theoperative position of the side -wipers lengthwise of the machine.

11. In a lasting machine, a pair of wiper-heads,

a common actuator for moving the heads towards and away from each otherlengthwise of a shoe in the machine, a pair of wiper-carriers pivoted oneach head, a pair of end-wipers mounted on the carriers on each hand,spring-actuated means for yieldingly urging the wipers of each pair totheir spread position, a pair of independently mounted side-wipers whoseends overlie the endwipers, a common actuator for moving the sidewiperswidthwise of the shoe, and means operated by the lasting movement of theside-wipers to move the end-wipers of each pair to lasting position.

12. In a lasting machine, a pair of heel-wipers and a pair of toe-wipershaving operative movement lengthwise and widthwise of a shoe in themachine, spring-actuated means for yieldingly stressing the wipers ofeach pair to their spread position, a pair of independently mountedsidewipers whose ends overlie the end-wipers, and means operated by theside-wipers and constructed to move the members of each pair ofendwipers into lasting position when the side-wipers are advanced tolasting position and permit said members to resume their spread positionwhen the side-wipers are retracted.

13. In a lasting machine, a wiper support comprising an upright brackethaving an elongated closed slot, a post carrying a headed set-screwpassing freely through said slot and having a wiper-seat at its upperend, a pair of ears on the sides of the post near its lower endconstructed and arranged to loosely straddle said bracket, andset-screws carried by the ears in the line of said bracket.

14. In a lasting machine, a side-wiper unit comprising a base, a posthaving heightwise movement on said base, and carrying a wiper-seat atits upper end, and a set-screw connection between the post and base tolock the former in different elevations on the latter, and supports toset the side-Wiper unit in different positions lengthwise and widthwiseof the machine.

15. In a lasting-machine, a pair of heel-wipers and a pair of toe-wipersadjustable towards and away from each other lengthwise of the machine, apair of side-wipers whose ends overlie said end-wipers, wiper-posts forsaid side-Wipers, bases constructed and arranged to carry the posts atdifferent heightwise elevations, and heads constructed and arranged tocarry the bases at different positions lengthwise of the machine.

16. In a lasting machine, heel-wipers and toewipers having operativemovement lengthwise and widthwise of a shoe in the machine, side-wipershaving operative movement widthwise of the machine and their endsoverlying the said endwipers, sectional supports for the wipersconstructed and arranged to carry the wipers at different heightwiseelevations, a common actuator to adjust the sets of endwipers towardsand away from each other, and means to adjust the side-wipers indifferent positions lengthwise of the machine.

17. In a lasting machine, a wiper-head, a pair of end-wiper carriershaving a common pivot on the head, a frame on the outer end of the headhaving an elongated horizontal slot in its outer portion, abearing-plate having a stem movable in the slot, set-nuts to lock thestem in adjusted positions in the slot, a bell-crank lever pivoted onthe head, and operative connections between the lever and theWiper-carriers.

18. In a lasting machine, a wiper-carrier, a wiper-support comprising abracket adjustably mounted on the carrier and a post adjustableheightwise on the bracket, adjustable connections between the post andbracket to lock the former in tilted positions on the latter, andconnections between the carrier and bracket to lock the latter indifferent widthwise positions on the carrier.

19. In a lasting machine, an opposite pair of sidewiper heads movablewidthwise of the machine, a screw-shaft centrally journaled in a bearingand constructed to move the heads towards and away from each other, andmeans to shift the bearing widthwise of the machine and lock it inadjusted position.

JOSEPH W. BARNA.

